WordPress Plugin

In the plugin, settings menu, I checked the option "Add plugin js scripts to the footer", but the plugin js files are not added to the WordPress footer.

Answer:

The plugin is using WordPress hook wp_footer to print the plugin js scripts to the footer. wp_footer is one of the most essential theme hooks.

The problem is because your WordPress theme does not call the WordPress function wp_footer() and the hook is not enabled. Please contact your WordPress theme provider and ask for how to support the wp_footer hook.

I have a website in progress, I used Wonderplugin for WordPress and as I came across on the development, I cannot get it working.

I already uploaded images and configured everything on WordPress.

I also copied the shortcode to the php page that I am working on. But the carousel does not show up.

Answer:

Normally this problem is because there are multiple jQuery files added to your WordPress.

You can view the HTML source code of your webpage, and check how many jQuery are added in your website.

In Google Chrome, you can view the HTML source code with menu View -> Developer -> View Source, then search text "jquery" in the source code.

There should be only one jQuery in the webpage, which is added by the WordPress system.

Some plugins add their own jQuery to the website, and this is not correct.

A plugin should always use the system installed jQuery, and the js files added from a plugin will be added after the system jQuery.

A jQuery will destroy all other jQuery functions that are added before it. So if a plugin adds its own jQuery, it may destroy other jQuery functions.

To fix the issue:

In the plugin, Setting menu, you can try to check the option "Add slider js scripts to the footer". This option will place the plugin js file to the footer and will fix the problem in most cases.

If the above option is not working, you can try to disable all other plugins and see whether the WonderPlugin works. If it works, you can then enable the plugins one by one, and find the plugin that causes the problem.

If WonderPlugin is still not working after you have disabled all other plugins, then the extra jQuery may have been added manually to the theme or the page, you need to find the code and remove it.

This is a tutorial for how to upgrade the plugin to a new version manually. You can use this tutorial to upgrade a free or commercial version to its latest version.

There are two methods to upgrade the plugin to its latest version manually:

The First Method

There are 4 steps in this method:

Step 1 - Make sure the keep data option is enabled

In your WordPress backend, goto the left menu Plugin Name (e.g., Wonder Carousel, Wonder Slider, etc) -> Settings, make sure there is an option Keep data when deleting the plugin and the option is checked. The option is checked by default. If your current version is very old, it may not have this option. In this case, do not use this method, use the following second method instead.

Step 2 - Deactivate and delete the old version

In the WordPress backend, goto the left menu Plugins -> Installed Plugins, deactivate the plugin and delete it. When deleting the plugin, ignore the warning "Are you sure you wish to delete these files and data" and click the button "Yes, Delete these files and data". This is a standard warning from WordPress.

Step 3 - Install and activate the new version

Step 4 - Clear WordPress Caches

If you have installed a WordPress js/css minify plugin or WordPress cache plugin for example, Autoptimize, W3 Total Cache, WP Rocket, WP Fastest Cache, WP Super Cache, empty all caches from the plugin.

Some web hosts, for example, GoDaddy, WPEngine, SiteGround, DreamHost, will also cache web files. You need to clear caches of the web hosting before testing. Please contact your web hosting provider and ask about how to clear caches.

Clear caches of your web browser before testing

The Second Method

If you are using a very old version, you may need to use this method to upgrade the plugin. There are 3 steps in this method:

Step 1: Install the new version plugin via FTP

First please extract the new version plugin ZIP file to a folder on your computer, then upload the extracted Plugin folder to the wp-content/plugins folder in your WordPress FTP server.

When a ZIP file is extracted, some unzip software may add a parent folder outside of the Plugin folder. Please make sure you have uploaded the Plugin folder, not its parent folder.

If your WordPress already has an old version installed, make sure to overwrite the existing folder in the server. Or you can delete the old version files first then upload the new version files.

Step 2: Make sure the plugin is activated

In your WordPress backend, left menu, Plugins -> Installed Plugins, find the plugin from the list, make sure the plugin is activated. If it's not, click the Activate link.

Step 3 - Clear WordPress Caches

If you have installed a WordPress js/css minify plugin or WordPress cache plugin for example, Autoptimize, W3 Total Cache, WP Rocket, WP Fastest Cache, WP Super Cache, empty all caches from the plugin.

Some web hosts, for example, GoDaddy, WPEngine, SiteGround, DreamHost, will also cache web files. You need to clear caches of the web hosting before testing. Please contact your web hosting provider and ask about how to clear caches.